Facts: - long tube race headers with motorsports merge collector. - catalytic bypass for race use. - 2 1/2 tubing (63.5 mm). - primary diameter 45mm outer , 42mm inner - reduces thermal stress on the motor. - made in Germany please add 2 engine to header gaskets when ordering - 2 qty 997 111 107 31 our latest development for the 981 is aimed at those who are looking for more torque in the mid-range and horsepower up top. These headers are ideal for those who are tracking their cars.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.